SU1377328A1 - Method of constructing drainage - Google Patents

Abstract

The invention relates to mechanical construction and can be used in heavy, low-permeable soils with a high content of ferrous compounds. The invention makes it possible to preserve the soil layer along the drainage trench road, to improve the filtration properties of the trench bedding and to prevent silting of the drainage with oxide iron compounds. In front of the tear-off trench, a layer of soil is removed along its route and laid on the edge of the trench. The structure-forming agent is poured into the excavation and the trenches are developed to the full depth, the developed soil mixed with the structure-forming agent is filled into the cavalier. Then the drain is placed on the bottom of the trench and its cut is cut with the upper edge of the trench. After the trench has been flashed with the structured soil of a cavalier, a layer of previously cut soil is put in place. A material that is also a good inhibitor that prevents the deposition of iron oxide compounds in drains, such as lime, 1 hp, is used as a structurant. f-ly, 6 ill. with se

Description

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The invention relates to land reclamation construction and can be applied in heavy, low permeable soils with a high content of iron compounds.

The purpose of the invention is to preserve the soil layer and improve the filtration properties of the trench backfill. FIG. Figure 1 shows the trench line after removing the soil layer, a transverse section; FIG. 2 shows the same after filling in the excavation of the structural substance; in FIG. 3, the same, after the trench has been excavated; FIG. 4, the same, after laying the drain on the bottom of the trench and placing it with a filtering layer from the cut off upper edges of the trench; FIG. 5, the same, after filling the trench with the well-styled soil of a cavalier; in fig. 6 - the same, after laying in place a layer of soil.

The method is carried out as follows.

A multi-bucket drill-laying excavator, for example, ETC 202A, is moving along the road of the drainage trench 1. The base machine in front is equipped with a wheeled cart, on which a container with an structuring substance and a feed dispenser are installed, and under it is a working body with a plowshare blade, removing the soil layer 2 and laying it on the edge of the trench 1,

Structuring substance 3 is poured into the formed recess from the tank on the trolley through the dosing unit. Then, passing the trencher along the route, trench 1 is developed to the full depth, and the developed soil mixed with ostrichating substance 3 is drained into the cavern 4. its edges form small rolls 5 of crushed soil, which is well mixed with the structuring substance 3,

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The drain 6 is placed in the formed drainage trench 1, its powder is cut off by the upper edges 7 of the drainage trench 1 along with rollers 5 on the structured soil located on the cich. They form a layer of well-filtering material 8 above draina 6. Since a material that is simultaneously a good inhibitor is used as an ostructuring substance, the drainage is also protected against the deposition of iron oxide compounds in it.

Claims (2)

1. A method for constructing a drainage, including a trench section, laying pipes into it and backfilling the trench with soil mixed with a structure-forming agent, so that, in order to preserve the soil layer and improve filtration trench backfill surgeries, before the trench fragment is removed, the vegetative layer of soil is removed along its route and laid on the trench edge, and the resulting excavation is filled with a conditioner, then the trench is fully developed with an undercut of the upper edges and dumped. the soil mixed with the structurant, into the cavalier and, after laying the drain on the bottom of the trench, fix it with the soil of the cut off upper edges of the trench, cover the trench with the structured soil of the cavalier and place the cut soil layer in place, 2. The method according to p. 1, characterized in that lime is used as a structurant. FIG 3 FIG. i fi, 5 FI.6